#include <STC15F2K60S2.H>

void system_int()
{
P0 = 0XFF;
P2 = P2&0X1F |0X80;
P2 &= 0X1F ;
	
P0 = 0X00;
P2 = P2&0X1F |0XA0;
P2 &= 0X1F ;	


}